Tom,
Pre 68 Dave and others will have better information, however, part of the answer would be:
No 235 engines were used in cars prior to 1950.
From 1950-1953 the Powerglide car 235 (hydraulic lifters) and truck 235s (mechanical lifters) would have been different. The only 235s available in cars through 1953 were the hydraulic lifter 235s that only came with the Powerglide option-package.
All car 235s from 1956 onwards had hydraulic lifters. No truck 235s (in any year) had hydraulic lifters.
Mechanical lifter high-pressure 235s were available in 54-55 on cars. Maybe those 235 engines were quite similar (except for carbs/air-cleaners).
1953 was the last year for the 216.
It will be interesting to see if the 216s for cars and trucks were the same (except, perhaps, for carburetors and air cleaners).
Here are data for 1948 car and truck 216s (the data looks the same for car and truck 216s through the end of the production-run, 1953):
1948 car 216 1948 truck 216 1954 and 1956 car/truck engine data are here.
